Tutorial Teknik Pengujian Basis Path Testing White Box Testing

Summary

This video explores two key software testing methods: White Box Testing and Black Box Testing, with a focus on the Basis Path Testing technique used in website testing. It explains the process of examining the internal structure of an application through White Box Testing, while Black Box Testing evaluates the software's functionality from an external perspective. The video also covers the steps involved in Basis Path Testing, such as calculating cyclomatic complexity, identifying independent paths, and creating a connection matrix. The goal is to ensure the software is free from errors before progressing to the programming phase.

Takeaways

• 😀 White-box testing involves analyzing the application's source code to identify potential errors and ensure the program performs as expected.
• 😀 In white-box testing, the focus is on checking the design and structure of the program, with testing based on the control flow of the software.
• 😀 Black-box testing, on the other hand, focuses solely on the functionality of the application without examining its internal code, typically performed after the software is built.
• 😀 White-box testing requires creating flowcharts and graphs to model the control flow of the software, which are then used to identify potential issues.
• 😀 The key metrics used in white-box testing include cyclomatic complexity, which helps evaluate the program's logical complexity based on its control flow.
• 😀 Cyclomatic complexity can be calculated using three methods: by counting regions (areas formed under nodes), using a formula involving edges and nodes, or by counting predicates and adding one.
• 😀 In white-box testing, an independent path test (PT) is used to ensure that all paths in the program are traversed to check for correctness.
• 😀 A connection matrix (or graph matrix) is used to represent the relationships between nodes in a program and helps in determining the cyclomatic complexity.
• 😀 For successful testing, the number of independent paths must match the cyclomatic complexity. If they do not, it indicates a design flaw in the system.
• 😀 After performing the tests, if all metrics and calculations align correctly, the software is considered ready for the next phase, which is programming and development.

Q & A

What is White Box Testing in software testing?

White Box Testing is a method of testing software where the internal structure, design, and code of the application are inspected. It focuses on checking individual modules and their code to ensure they function correctly.

How does White Box Testing differ from Black Box Testing?

White Box Testing analyzes the internal code and structure of the software, while Black Box Testing focuses on evaluating the software's functionality by observing its inputs and outputs without examining the code.

What is Black Box Testing and when is it used?

Black Box Testing is a method that tests the software's functionality without considering its internal code or structure. It is typically done after the software has been fully developed.

What is Basis Path Testing (BPT) in White Box Testing?

Basis Path Testing is a technique used in White Box Testing to measure the logical complexity of a program’s design. It involves creating flowcharts and calculating cyclomatic complexity to ensure that all execution paths are covered in the testing.

What are the symbols used in the flowgraph for Basis Path Testing?

The symbols used in flowgraphs include: Nodes (representing procedural steps), Edges (representing control flow between steps), Predicates (conditions with two or more exit paths, such as 'if' statements), and Regions (areas formed by edges and nodes).

How is cyclomatic complexity calculated in Basis Path Testing?

Cyclomatic complexity can be calculated using several methods: 1) By counting the number of regions in the flowgraph, 2) Using the formula V(G) = E - N + 2P (where E is the number of edges, N is the number of nodes, and P is the number of predicates), or 3) By counting the number of predicates and adding one.

What is the role of independent paths in Basis Path Testing?

Independent paths are unique execution paths through the program that should be tested to ensure all potential scenarios are covered. The number of independent paths should match the cyclomatic complexity for the testing to be considered complete.

What is the importance of the connection matrix in Basis Path Testing?

The connection matrix is used to represent the relationships between nodes and edges in a program’s flowgraph. It helps visualize and calculate the cyclomatic complexity, ensuring that all paths are correctly connected and tested.

What is the significance of matching the results in Basis Path Testing?

Matching the results, such as the cyclomatic complexity and independent paths, ensures that the testing process is correct. If the results don’t align, it indicates an issue with the design or logic of the program, requiring correction.

What happens if the calculated cyclomatic complexity and independent paths do not match?

If the cyclomatic complexity and the number of independent paths do not match, it indicates that there is an error in the design or code structure of the program. This discrepancy suggests the need for further refinement or debugging before moving forward with development.